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1 | /* |
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2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
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3 | * |
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4 | * Copyright 2022 Olaf Wintermann. All rights reserved. |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions are met: |
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8 | * |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 | * POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |
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29 | #ifndef WS_PG_VFS_H |
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30 | #define WS_PG_VFS_H |
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31 | |
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32 | #include "../../public/nsapi.h" |
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33 | #include "../../public/vfs.h" |
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34 | |
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35 | #include "config.h" |
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36 | |
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37 | #include <libpq-fe.h> |
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38 | #include <libpq/libpq-fs.h> |
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39 | |
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40 | #ifdef __cplusplus |
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41 | extern "C" { |
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42 | #endif |
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43 | |
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44 | #define PG_ETAG_MAXLEN 48 |
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45 | |
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46 | typedef struct PgVFS { |
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47 | ResourceData *pg_resource; |
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48 | PGconn *connection; |
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49 | char root_resource_id_str[32]; |
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50 | int64_t root_resource_id; |
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51 | } PgVFS; |
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52 | |
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53 | typedef struct PgFile { |
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54 | int64_t resource_id; |
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55 | int64_t parent_id; |
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56 | WSBool iscollection; |
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57 | Oid oid; |
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58 | int fd; |
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59 | int oflags; |
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60 | char etag[PG_ETAG_MAXLEN]; |
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61 | struct stat s; |
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62 | } PgFile; |
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63 | |
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64 | typedef struct PgDir { |
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65 | VFSFile *file; |
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66 | PGresult *result; |
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67 | int row; |
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68 | int nrows; |
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69 | } PgDir; |
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70 | |
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71 | void* pg_vfs_init(ServerConfiguration *cfg, pool_handle_t *pool, WSConfigNode *config); |
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72 | |
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73 | VFS* pg_vfs_create(Session *sn, Request *rq, pblock *pb, void *initData); |
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74 | |
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75 | VFS* pg_vfs_create_from_resourcedata(Session *sn, Request *rq, PgRepository *repo, ResourceData *resdata); |
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76 | |
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77 | |
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78 | /* |
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79 | * Resolve a path into a parent_id and resource name |
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80 | * |
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81 | * Only absolute paths are supported, therefore path[0] must be '/' |
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82 | * |
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83 | * If the resource is not found, res_errno is set to ENOENT |
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84 | */ |
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85 | int pg_resolve_path( |
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86 | PGconn *connection, |
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87 | const char *path, |
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88 | const char *root_id, |
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89 | int64_t *parent_id, |
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90 | int64_t *resource_id, |
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91 | Oid *oid, |
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92 | const char **resource_name, |
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93 | WSBool *iscollection, |
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94 | struct stat *s, |
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95 | char *etag, |
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96 | int *res_errno); |
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97 | |
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98 | void pg_set_stat( |
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99 | struct stat *s, |
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100 | const char *iscollection, |
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101 | const char *lastmodified, |
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102 | const char *creationdate, |
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103 | const char *contentlength); |
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104 | |
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105 | int pg_create_file( |
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106 | VFSContext *ctx, |
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107 | PgVFS *pg, |
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108 | const char *path, |
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109 | int64_t *new_resource_id, |
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110 | int64_t *res_parent_id, |
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111 | Oid *oid, |
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112 | const char **resource_name, |
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113 | struct stat *s, |
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114 | WSBool collection); |
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115 | |
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116 | int pg_remove_res( |
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117 | VFSContext *ctx, |
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118 | PgVFS *pg, |
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119 | int64_t resource_id, |
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120 | Oid oid); |
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121 | |
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122 | int pg_update_resource(PgVFS *pg, int64_t resource_id, int64_t contentlength); |
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123 | |
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124 | SYS_FILE pg_vfs_open(VFSContext *ctx, const char *path, int oflags); |
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125 | int pg_vfs_stat(VFSContext *ctx, const char *path, struct stat *buf); |
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126 | int pg_vfs_fstat(VFSContext *ctx, SYS_FILE fd, struct stat *buf); |
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127 | VFS_DIR pg_vfs_opendir(VFSContext *ctx, const char *path); |
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128 | VFS_DIR pg_vfs_fdopendir(VFSContext *ctx, SYS_FILE fd); |
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129 | int pg_vfs_mkdir(VFSContext *ctx, const char *path); |
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130 | int pg_vfs_unlink(VFSContext *ctx, const char *path); |
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131 | int pg_vfs_rmdir(VFSContext *ctx, const char *path); |
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132 | |
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133 | |
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134 | ssize_t pg_vfs_io_read(SYS_FILE fd, void *buf, size_t nbyte); |
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135 | ssize_t pg_vfs_io_write(SYS_FILE fd, const void *buf, size_t nbyte); |
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136 | ssize_t pg_vfs_io_pread(SYS_FILE fd, void *buf, size_t nbyte, off_t offset); |
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137 | ssize_t pg_vfs_io_pwrite(SYS_FILE fd, const void *buf, size_t nbyte, off_t offset); |
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138 | off_t pg_vfs_io_seek(SYS_FILE fd, off_t offset, int whence); |
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139 | off_t pg_vfs_io_tell(SYS_FILE fd); |
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140 | void pg_vfs_io_close(SYS_FILE fd); |
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141 | const char *pg_vfs_io_getetag(SYS_FILE fd); |
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142 | |
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143 | |
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144 | int pg_vfs_dirio_readdir(VFS_DIR dir, VFS_ENTRY *entry, int getstat); |
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145 | void pg_vfs_dirio_close(VFS_DIR dir); |
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146 | |
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147 | time_t pg_convert_timestamp(const char *timestamp); |
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148 | int pg_convert_timestamp_tm(const char *timestamp, struct tm *tm); |
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149 | |
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150 | #ifdef __cplusplus |
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151 | } |
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152 | #endif |
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153 | |
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154 | #endif /* WS_PG_VFS_H */ |
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155 |